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Check to see if the differential vent is plugged. If so pressure developed due to warming of the fluid can force the fluid out.

This is particularly true if the f=differential is overfilled. It should have 3.5 quarts. This will leave it about 1/2" below the threads of the fill plug. DO NOT Overfill it
 

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Hopefully not the welds on the axle tubes....

Sent from my SM-N975U using Tapatalk
 
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